3sgte recirculated, Now with PICS! Options

[lagos]

so um yeah.... get off your ass and post some pics greening. its been 7 days! hahaha

[CelicaSTX02]

so um yeah.... get off your ass and post some pics greening. its been 7 days! hahaha

yeah Jgreen, stop denying us pictures

[jgreening]

Perhaps you guys missed this:

I will try to post them in the next day or two.

I still have 10 hours to make my self-imposed deadline

[playr158]

im really trying to keep up and learn something....but alas...once again...im confused! mr lagos? if you would? please?

BPV = by pass valve
BOV = blow off valve

these two things to inherently the exact same thing...the get rid of the air in the intercooler piping that is inbetween the throttle body and turbo between shifts and when you let off the gas
the difference is a BOV lets the air out into the atmosphere..this mean you will run rich for a very slight moment in time as the computer thinks it has more air then it really does and inserts too much fuel into the cylinders..
a BPV (stock version on Mr2 and so forth) does the exact same thing except when it releases the air out of the piping it shoots it down a pipe and back into the intake PRE turbo...this keeps the same amount of air in the system keeping your Air/Fuel at a consistent measure and improving throttle response..

when they refer to "recirculation kit" its basically an adaptor to the outlet of a blow off to connect it to a pipe and run it into the intake such as the stock BPV

hope your cleared up a little!

[jgreening]

bump for pics.

[playr158]

very nice and clean looking

[Kadett]

Nice... almost looks stock

[Defgeph]

sweet, looks great Jay

[brianforster]

now im even more jealous that you cant get these made.. that is EXACTLY what i want except with one more nipple for the PCV froownn

[lagos]

looks nice

[snapshotgt]

Clean.

[jgreening]

that is EXACTLY what i want except with one more nipple for the PCV

Brian, I am curious why you say this. My understanding is that PCV vented to the atmosphere provides no downsides (other than having to clean the filter about once per year). Are there any other reasons you would want to vent this back into the intake? Anyone else is welcome to chime in here too.

[jcbass7]

nice mod, how much does this kill the bov sound?



out of curiosity, what is that red thing behind your cruise control actuator, in front of your driver side strut tower

[jgreening]

nice mod, how much does this kill the bov sound?



out of curiosity, what is that red thing behind your cruise control actuator, in front of your driver side strut tower

1. completely
2. adjustable fuel pressure regulator

[brianforster]

that is EXACTLY what i want except with one more nipple for the PCV

Brian, I am curious why you say this. My understanding is that PCV vented to the atmosphere provides no downsides (other than having to clean the filter about once per year). Are there any other reasons you would want to vent this back into the intake? Anyone else is welcome to chime in here too.

lagos yelled at me when i said i wanted to vent mine to atmosphere!


well that and he linked me to an mr2oc thread and another thread, and he also made a good point that if it aint broke dont fix it.

plus im pretty sure your engine bay gets dirtier with it vented

[jgreening]

that is EXACTLY what i want except with one more nipple for the PCV

Brian, I am curious why you say this. My understanding is that PCV vented to the atmosphere provides no downsides (other than having to clean the filter about once per year). Are there any other reasons you would want to vent this back into the intake? Anyone else is welcome to chime in here too.

lagos yelled at me when i said i wanted to vent mine to atmosphere!


well that and he linked me to an mr2oc thread and another thread, and he also made a good point that if it aint broke dont fix it.

plus im pretty sure your engine bay gets dirtier with it vented

My general understanding is that the only benefit of connecting that to the intake is emissions related. I am not an expert on it though.

[lagos]

that is EXACTLY what i want except with one more nipple for the PCV

Brian, I am curious why you say this. My understanding is that PCV vented to the atmosphere provides no downsides (other than having to clean the filter about once per year). Are there any other reasons you would want to vent this back into the intake? Anyone else is welcome to chime in here too.

having the pcv system hooked up to the intake helps it work correctly, because the sucktion from the intake helps vent the pcv system correctly. here is some great info on how it all works.
http://autoshop101.com/forms/h63.pdf



This post has been edited by lagos: Jul 16, 2006 - 9:17 PM

[jgreening]

I read the info and the link and have some questions. I also want to talk theory for a bit but I am not challenging your knowledge in this area.

We know the blowby is mostly a gas / air mixture. We also know the AFM is designed to measure how much air is coming through the intake so the proper amount of fuel can be injected. Adding the blowby back into the post AFM metered air should essentially make a "richer" (i.e. air that contains some fuel) prior to going into the engine. Why would a plugged PCV (i.e. open to atmosphere / not allowing blowby back into the intake) make you have a rich condition as the information in the link indicates?

[phattyduck]

Why would a plugged PCV (i.e. open to atmosphere / not allowing blowby back into the intake) make you have a rich condition as the information in the link indicates?

The extra air that is escaping to atmosphere has been metered by the AFM... Therefore, the car thinks there is more air in the cylinders than there actually is. Any AFM/MAF car should have a completely closed intake (including PCV). This problem dissapears on MAP based ECUs (ie, high horsepower cars, 3rd gen 3s-gte, Hondas, etc).

-Charlie

[jgreening]

I don't understand. We are talking blowby here. The intake charge has already been ingested by the engine correct? The blowby is an air / fuel mixture.

I can tell you that my bogging, smoking, and backfires have all stopped despite my PCV vented to atmosphere.

From the information I have read tonight, it seems Art is correct that the rerouting back into the intake (or exhaust for that matter) serves as a vacuum source for the PCV to help the blowby exit. Another thing I don't understand is why a vacuum source is needed. I don't undertand why that air doesnt just escape without the vacuum source.